Each Marcello Flutes mouthpiece (vertical or traditional) is the result of a precise balance between tradition and acoustic experimentation. The riser, at a height of 5.2 mm, and the walls, consistently 5.4 mm thick throughout the tube, are not arbitrary measurements. These dimensions provide:

Enhanced air stability, preventing unwanted vibrations and producing a fuller, more resonant sound.

A warm and expressive timbre across all registers.

Balanced projection, offering the power needed for concert halls while maintaining fine control over delicate nuances.

Unlike industrial methods that standardize dimensions and mechanize the carving process, each interior is entirely hand-sculpted and tuned by ear, just as the great French masters Louis Lot and Godfroy once did. This artisanal work allows the discovery of the precise point of acoustic equilibrium—an equilibrium too delicate to be reliably reproduced by machines.

In the modern tradition, the designs of Albert Cooper established benchmarks for mouthpiece geometry and internal tapering, setting standards still referenced today. At Marcello Flutes, however, each piece is unique: we do not aim to create a universal standard, but rather a voice of its own, meticulously crafted for the individual musician.

The final result is not merely an accessory, but a true work of acoustic art, born of the luthier’s craftsmanship and